As part of a study of the effects of predatory intertidal crab species on snail populations, researchers measured the mean closing forces and the propdus heights of the claws on several crabs of three species.
A data frame with 38 observations on the following 3 variables.
closing strength of claw of the crab
propodus height of claw of the crab
species to which the crab belongs
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
Yamada, S.B. and Boulding, E.G. (1992). Shell–breaking Efficiency of Predatory Crabs Influences the Distribution of an Intertidal Snail, Technical Report, Zoology Department, Oregon State University.
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